IT’S been raining a lot lately. Have you considered taking up hula dancing?

That advice comes from Harry Kim, chief executive of Hawaii County, whose office just happens to sit in the rainiest city in America: Hilo, Hawaii.

So New Yorkers – who are enduring the rainiest summer of a really rainy year – could learn a lot about surviving this soggy season from Mayor Kim.

His first piece of advice? Get lai-ed: “If you’re going to be indoors so much, you should have lots of flowers around,” said Kim, whose city is deluged by 200 inches of rain a year.

And with options like softball, jogging or pineapple-picking washed out, Kim recommended other aerobic exercise (wink, wink). “I endorse hula dancing, but there are other forms of exercise that keep up your spirits.”

It’s widely known that everyone always complains about the weather – but Kim said those frowns can be our umbrella.

“Rain is like Alcoholics Anonymous,” Kim said. “Everyone is in the same boat, so bitching about the weather really does help.”

If all else fails, Kim said, rent “The Sound of Music.”

Hizzoner and I split over his movie recommendations, so I called Ian Birnie, the Hilo harbormaster. He said that when life throws you lemons, you should throw away the nice duds.

“You’re all wearing suits and expensive dresses, but you should dress casually,” Birnie said. “I never wear a tie, so if I get wet, it’s no big deal.”

Shirts are optional at Hilo’s rain festival, created years ago to attract tourists to America’s rain capital.

“There are so many reasons to celebrate the benefits of abundant rainfall,” said Roxcie Waltjen, Hilo’s cultural director. “Great-tasting water, abundant foliage and clean streets.” Great, we have those too – at least, the first two.

The centerpiece of the festival is the umbrella parade (think Easter Sunday, with silly umbrellas) and the milk-carton boat race. (“We race ’em right in the gutter!” Waltjen said.)

And the best thing about Hilo’s constant rain is that “people don’t have to haul their own water,” Waltjen gushed. “Of course, that may not be directly applicable to your situation.”